How to manage anger and avoid home violence?

Beware! Loosing Control of Anger can Destroy your Family

One of our family friends recently had a serious fight in the house. He had a heated argument with his wife and later he turned violent and bitten his wife up. The two children, trembling with fear, hid themselves at a corner of the living room, witnessing their parents fought in the house. It was a traumatic experience for the children. The parents later had to bring the children to seek therapeutic counseling to help build their confidence again.
My friend later told me that he has this problem of controlling his anger at home. While he believes that a man should not hit his wife, when his emotion runs high, he just looses control altogether. The wife has another set of problem too. In the height of the arguments, she would intelligently corner the husband to admit his wrongs. My friend speaks reasonably and has no problem carrying meaningful conversations in normal days. But when he starts an argument with his wife, his brain stops functioning. He would be overtaken by emotions.